Non-vibrating ball check valve

Details Non-vibrating ball check valve Non-vibrating ball check valve

2005-05-31

2005-05-31

Rivell, John (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S533150

Reexamination Certificate

active

06899127

ABSTRACT:
A ball check valve comprises a valve body chamber which includes an inlet opening, an outlet opening, and a ball that is free to travel within the valve body chamber. A valve seat is adapted for receiving the ball. A body clearance section is located downstream of the inlet opening. A bore section is located downstream of the body clearance section. Fluid flow is allowed to flow through the valve body from the inlet opening through the outlet opening, but fluid flow through the valve body from the outlet opening through the inlet opening is prohibited by the interaction of the ball and the valve seat. The inlet opening is smoothly contoured to urge fluid flow between the inlet opening and the outlet opening to be laminar in nature.

REFERENCES:
patent: 544376 (1895-08-01), Porter
patent: 1091980 (1914-03-01), Steinberg
patent: 1555934 (1925-10-01), Barker
patent: 1935978 (1933-11-01), Harbison
patent: 2018769 (1935-10-01), Tryon
patent: 2103427 (1937-12-01), Long
patent: 3055391 (1962-09-01), Shuk et al.
patent: 3498315 (1970-03-01), Hester et al.
patent: 4070237 (1978-01-01), Woodward
patent: 4286622 (1981-09-01), Ninomiya et al.
patent: 4674529 (1987-06-01), Ferguson
patent: 5593292 (1997-01-01), Ivey
patent: 6280166 (2001-08-01), Shiraishi

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